Sökning: "polymer electrolyte lithium coordination"

Hittade 5 avhandlingar innehållade orden polymer electrolyte lithium coordination.

  1. 1. Cation Conduction and Coordination in Carbonyl-Containing Compounds : Li+ Transport in Alternative Polymer Electrolyte Host Materials

    Författare :Therese Eriksson; Daniel Brandell; Jonas Mindemark; Claudio Gerbaldi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Solid polymer electrolytes; Lithium ion batteries; Ion transport; Polyester; Polycarbonate; Polyketone; Ion coordination; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Sammanfattning : The field of solid polymer electrolytes (SPEs) used to create safer lithium-ion batteries has been dominated by polyethylene oxide (PEO) since the discovery of its ion-conducting properties in the 1970s. In this thesis, as an alternative, the ion coordination and conduction properties of SPEs based on polyketones, polyesters and polycarbonates are investigated. LÄS MER

  3. 2. Amphiphilic Graft Copolymer Electrolytes for Lithium-Ion Polymer Batteries. - Preparation and Characterisation

    Författare :Patrik Gavelin; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer technology; biopolymers; Polymerteknik; Kemiteknik och kemisk teknologi; Chemical technology and engineering; transport dynamics; ion conductivity; solid polymer electrolyte; gel electrolyte; macromonomer copolymerization; amphiphilic graft copolymer;

    Sammanfattning : In the present work amphiphilic graft copolymers were prepared by free radical copolymerization of macromonomers in solution. The graft copolymers consisted of methacrylate backbones bearing ethylene oxide (EO)n side chains of varying length as ionophilic groups, and fluorocarbon (CF2)6 side chains or hydrocarbon groups as ionophobic groups. LÄS MER

  4. 3. Understanding Ionic Conductivity in Crystalline Polymer Electrolytes

    Författare :Daniel Brandell; Josh Thomas; Torbjörn Gustafsson; Peter G. Bruce; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Polymer electrolyte; molecular dynamics; conductivity mechanism; aliovalent anion substitution; smectic; nematic; polymer chain length; Kemi; Chemistry; Kemi;

    Sammanfattning : Polymer electrolytes are widely used as ion transport media in vital applications such as energy storage devices and electrochemical displays. To further develop these materials, it is important to understand their ionic conductivity mechanisms. LÄS MER

  5. 4. Advanced Materials for Rechargeable Lithium Batteries

    Författare :Jae-Kwang Kim; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rechargeable lithium battery; rate capability; Organic electrode; cycle stability.; Ionic liquid-based polymer electrolyte; electrochemical stability;

    Sammanfattning : Lithium rechargeable batteries have gained much attention in the pursuit for alternative energy sources because of advantages such as high energy density and high electric potential. In addition, the development of low-cost materials has been of interest to reduce the cost of batteries, especially those destined for transportation applications such as electric (EVs) or hybrid-electric vehicles (HEVs). LÄS MER

  7. 5. Modelling the Molecular World of Electrolytes and Interfaces : Delving into Li-Metal Batteries

    Författare :Mahsa Ebadi; Daniel Brandell; Tejs Vegge; Uppsala universitet; []
    Nyckelord :Li-metal battery; solid polymer electrolyte; density functional theory; molecular dynamics simulation; solid electrolyte interphase;

    Sammanfattning : Lithium metal batteries (LMBs) are potential candidates for powering portable electronic devices and for electromobility. However, utilizing the reactive Li metal electrode means tackling serious challenges in terms of safety risks. LÄS MER